Laws of Motion Questions (MCQs), NEET, JEE Main – Test 01

A rigid ball of mass m strikes a rigid wall at 60° and gets reflected without loss of speed as shown in the figure below. The value of impulse imparted by the wall on the ball will be [NEET UG 2016]

Maximum acceleration of the train in which a 50 kg box lying on its floor will remain Stationery

(Given : Co-efficient of static friction between the box and the train’s floor is 0.3 and g = 10 ms^–2) [Karnataka CET 2016]

Given in the figure are two blocks A and B of weight 20 N and 100 N, respectively. These are being pressed against a wall by a force F as shown. If the coefficient of friction between the blocks is 0.1 and between block B and the wall is 0.15, the frictional force applied by the wall on block B is [JEE MAIN 2015]

A block of mass m is placed on a surface with a vertical cross section given by .  If the coefficient of friction is 0.5, the maximum height above the ground at which the block can be placed without slipping is [JEE MAIN 2014]

Three blocks with masses m, 2m and 3m are connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward at constant speed v. What is the net force on the block of mass 2 m?
(g is the acceleration due to gravity) [NEET UG 2013]