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
The length of a spring is α when a force of 4 N is applied on it and the length is β when 5 N force is applied...A 5 kg. mass is accelerated from rest to 60 m/s in 1 sec. What force acts on it : -...A free 238U nucleus kept in a train emits an alpha particle. When the train is stationary, a nucleus decays and the dist...A block of weight W is suspended by a string of fixed length . The ends of the string are held at various positions as s...The coefficient of static friction between two surfaces depend on...