What is a centripetal force?
Question types
Force question types
134 questions across 7 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.
134
Questions
7
Question groups
5
Question types
01
[1 Mark Question Answer]
31 Q→02[2 Mark Question Answer]
20 Q→03[3 Mark Question Answer]
25 Q→04[5 Mark Question Answer]
8 Q→05TRUE / FALSE
7 Q→06MCQ
34 Q→07fill in the blanks.
9 Q→Sample Questions
Force questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
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Name the force required for circular motion. State its direction.
Give an example of motion in which speed remains uniform, but the velocity changes.
Is it possible to have an accelerated motion with a constant speed? Name such type of motion.
Is centrifugal force a real force?
Explain the motion of a planet around the sun in a circular path.
Explain the meaning of uniform circular motion. Give one example of such motion.
A small pebble is placed near the periphery of a circular disc which is rotating about an axis passing through it centre.
(a) What will be your observation when you are standing outside the disc? Explain it
(b) What will be your observation when you are standing at the centre of the disc. Explain it
(a) What will be your observation when you are standing outside the disc? Explain it
(b) What will be your observation when you are standing at the centre of the disc. Explain it
On what factor does the position of the centre of gravity of a body depend? Explain your answer with an example.
Define the term centre of gravity of a body.
Differentiate between Uniform linear motion and Uniform circular motion.
A uniform circular motion is an accelerated motion explain it. State whether the acceleration is uniform or variable? Name the force responsible to cause this acceleration. What is the direction of force at any instant? Draw diagram in support of your answer.
Draw a neat labelled diagram for a particle moving in a circular path with a constant speed. In you diagram show the direction of velocity at any instant.
State two differences between the centripetal and centrifugal force.
A piece of stone tied at the end of a thread is whirled in a horizontal circle. Name the force which provides the centripetal force.
- Is the velocity of stone uniform or variable?
- Is the acceleration of stone uniform or variable?
- What is the direction of acceleration of stone at any instant?
- What force does provide the centripetal force required for circular motion?
- Name the force and its direction which acts on the hand.
Explain how you will determine the position of the centre of gravity experimentally for a triangular lamina (or a triangular piece of cardboard)
The figure shows two forces each of magnitude 10 N acting at the point A and B at a separation of 50 cm, in opposite directions. Calculate the resultant moment of two forces about the point A, B and
O, situated exactly at the middle of the two forces.
O, situated exactly at the middle of the two forces.
A uniform metre rule of weight 10gf is pivoted at its 0 mark.
How can it be made horizontal by applying a least force ?
The figure shows a uniform metre rule placed on a function at its mid-point O and having a weight 40 gf at the 10 cm mark and a weight of 20 gf at the 9.0 cm mark.Is the metre rule in equilibrium?
If not how will the rule turn?
If not how will the rule turn?
When does a body rotate? State one way to change the direction of rotation of a body. Given a suitable example to explain your answer.
A Boy experiences a centrifugal force on his hand when he rotates a piece of stone tied at one end of a string, holding the other end in the hand.
In a uniform circular motion, the speed continuously changes because of the direction of motion changes.
A uniform linear motion is unaccelerated , while a uniform circular motion is an accelerated motion..
The motion of the moon around the earth in a circular path is an accelerated motion.
The earth moves around the sun with a uniform.
The centre of gravity of a hollow cone of height $h$ is at distance $x$ from its vertex where the value of $x$ is : ________ .
- A$\frac{ h }{3}$
- B$\frac{ h }{4}$
- ✓$\frac{2 h }{3}$
- D$\frac{3 h }{4}$
Answer: C.
View full solution →The centre of gravity of a uniform ball is
a) at its geometrical centre
b) at its bottom
c) at its topmost point
d) at any point on its surface
a) at its geometrical centre
b) at its bottom
c) at its topmost point
d) at any point on its surface
- ✓at its geometrical centre
- Bat its bottom
- Cat its topmost point
- Dat any point on its surface
Answer: A.
View full solution →A body is acted upon by two unequal forces in opposite directions, but not in the same line. The effect is that : ________ .
- AThe body will have only the rotational motion
- BThe body will have only the translational motion
- CThe body will have neither the rotational motion nor the translational motion
- ✓The body will have rotational as well as translational motion.
Answer: D.
View full solution →The moment of a force about axis depends : ________ .
- AOnly on the magnitude of force
- BOnly on the perpendicular distance of force from the axis
- CNeither on the force nor on the perpendicular distance of force from the axis
- ✓Both on the force and its perpendicular distance from the axis.
Answer: D.
View full solution →A door lock is opened by turning the lever (handle) of length 0.2 m . If the moment of force produced is 1 Nm , then the minimum force required is:
- ✓5 N
- B10 N
- C20 N
- D0.2 N
Answer: A.
View full solution →The moon revolving around the earth is in ____________ equilibrium.
In a beam balance when the beam is balanced in a horizontal position, it is in ____________equilibrium.
In equilibrium algebraic sum of moments of all forces about the point of rotation is ______________.
The S.I. unit of moment of force is _________.
The ___________ [Clockwise/Anticlockwise/Total] moments are considered to be positive.
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