Friction — Physics STD 11 Science — Question

A monkey climbs up a slippery pole for 3 seconds and subsequently slips for 3 seconds. Its velocity at time t is given by v(t) = 2t(3 - t); 0 < t < 3 and v(t) = -(t - 3)(6 - t) for 3 < t < 6s in m/s. It repeats this cycle till it reaches the height of 20m.
At what time is its acceleration maximum in magnitude?

A body having constant linear momentum then force acting on the body is equal to _______.

At which point on its path a projectile has the smallest speed?

What are the factors on which moment of inertia of a body depend?

Two particles A and B start from rest and move for equal time on a straight line. The particle A has an acceleration a for the first half of the total time and 2a for the second half. The particle B has an acceleration 2a for the first half and a for the second half. Which particle has covered larger distance?

Define real gases.

Angle of friction which the resultant of limiting friction and normal reaction makes with the normal, is numerically equal to ______.

Is work done a scalar or a vector?

Can mechanical waves travel through vacuum?