Home
Class 11
PHYSICS
A man whose mass is m kg jumps verticall...

A man whose mass is `m` kg jumps vertically into air from the sitting position in which his centre of mass is at a height `h_(1)` from the ground. When his feet are just about to leave the ground his centre of mass is at height `h_(2)` from the ground and finally centre of mass rises to `h_(3)` above the ground when he is at the top of the jump. what is the average upward force exerted by the ground on him?

Promotional Banner

Similar Questions

Explore conceptually related problems

A man whose mass is m kg jumps vertically into air from a sitting position in which his centre of mass is at a height h_(1) from the ground. When his feet are just about to leave the ground his centre of mass is h_(2) from the ground and finally rises to h_(3) when he is at top of the jump . What is the average upwards force exerted by the ground on him ?

A man whose mass is m kg jumps vertically into air from a sitting position in which his centre of mass is at a height h_(1) from the ground. When his feet are just about to leave the ground his centre of mass is h_(2) from the ground and finally rises to h_(3) when he is at top of the jump . What is the average upwards force exerted by the ground on him ?

A 60 kg man leaps vertically from a crouching position when his centre of mass is 40 cm above the ground. As his feet leave the floor his centre of mass is 90 cm above the ground and rises to 120 cm at the top of his leap. Calculate up upward froce, assumed constant, that the ground exerts on the man. [Hint : Human body is a system of particles]

A block of mass m is dropped from height h above the ground. Find out the speed of the block when it reaches the ground.

How much work is done when a body of mass m is raised to a height h above the ground?

A body when released from the top of a tower of height h reaches the ground in time T. At what time it is at a height h/2 above the ground?

A body of mass m=2kg falls from a height h=10m from the ground level . What is the magnitude of total change in momentum of the body before it strikes the ground?

If a man of ,mass M jumps to the ground from a height h and his centre of mass moves a distance x in the time taken by him to 'hit' the ground the average force acting on him (assuming his retardation to be constant during his impact with the ground) is :