Laws of MotionHard
Question
When a lift is descending with an acceleration a, the force exerted by an object of mass m on the lift will be:
Options
A.mg
B.m(g + a)
C.m (g-a)
D.ma
More Laws of Motion Questions
A rocket of mass 120 kg. is fired in the gravity free space is ejected gases with velocity 600 m/sec at the rate of 1 kg...In the fig. mass M = 10 gm. is placed on an inclined plane. In order to keep it at rest, the value of mass m will be:...A block is kept on a frictionless inclined surface with angle of inclination α. The incline is given an acceleratio...Adjoining figure shows two blocks A and B pushed against the wall with the force F. The wall is smooth but the surfaces ...A man of mass 50 kg is pulling on a plank of mass 100 kg kept on a smooth floor as shown with force of 100 N. If both ma...