Question 1

A horse has to pull a cart harder during the first few steps of his motion.

Accepted Answer

The first few steps are always difficult.

Question 2

The bob of a simple pendulum is a ball full of water. If a fine hole is made in the bottom of the ball, the time period first increases and then decreases.

Accepted Answer

As water flows out of the bob the weight of bob decreases.

Question 3

Two spheres of same size one of mass $2 kg$ and another of mass $4 kg$ are dropped simultaneously from the top of Qutab Minar (height $= 72   m$). When they are $1 m$ above the ground, the two spheres have the same:

Accepted Answer

Momentum , Kinetic energy and Potential energy has the term of mass in them and since they have different mass but same velocity all these quantity would be different but since acceleration is always 'g' it will be same for both.

Laws Of Motion

Physics
2324 Views

A horse has to pull a cart harder during the first few steps of his motion.

The first few steps are always difficult.

The bob of a simple pendulum is a ball full of water. If a fine hole is made in the bottom of the ball, the time period first increases and then decreases.

As water flows out of the bob the weight of bob decreases.

Two spheres of same size one of mass $2 k g$ and another of mass $4 k g$ are dropped simultaneously from the top of Qutab Minar (height $= 72 m$ ). When they are $1 m$ above the ground, the two spheres have the same:

Laws Of Motion

Physics 2324 Views

A horse has to pull a cart harder during the first few steps of his motion.

The first few steps are always difficult.

The bob of a simple pendulum is a ball full of water. If a fine hole is made in the bottom of the ball, the time period first increases and then decreases.

As water flows out of the bob the weight of bob decreases.

Two spheres of same size one of mass 2kg and another of mass 4kg are dropped simultaneously from the top of Qutab Minar (height =72m). When they are 1m above the ground, the two spheres have the same:

Physics
2324 Views

Two spheres of same size one of mass $2 k g$ and another of mass $4 k g$ are dropped simultaneously from the top of Qutab Minar (height $= 72 m$ ). When they are $1 m$ above the ground, the two spheres have the same: