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Defining Kinetic Energy

Two blocks A ...

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Two blocks A and B of mass 2kg and 4kg are placed one over other and the 2kg mass block is placed on 4kg block with initial velocity v. A time varying horizontal force F=2t is applied on the upper block. Draw a graph showing accelerations of A and B on y axis and time on x axis. Coefficients of friction between A and B is 1/2 and the horizontal surface over which B is placed is smooth. Take g=10m/s^2.

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Q. Two blocks A and B of mass

2 k g

4 k g

respectively are placed one over the other as shown in the figure. A time varying horizontal force

F = 2 t

is applied on the upper block as shown in figure. Here

t

s e c o n d

F

n e w t o n

. Draw a graph showing accelerations of A and B. The coefficient of friction between A and B is

μ = \frac{1}{2}

and the horizontal surface over which B is placed is smooth.

(g = 10 m / s^{2})

Q. A 2 kg block is placed over a 4 kg block and both are placed on a smooth horizontal surface. The coefficient of friction between the block is 0.20. Find the acceleration of the two blocks if a horizontal force of 12 N is applied to (a) the upper block, (b) the lower block. Take g = 10 m/s².

A

B

2 kg

4 kg

are placed one over the other. A horizontal force

F = 2 t

, which varies with time is applied on the upper block. If coefficient of friction between blocks

A

B

is 0.5 and horizontal surface is smooth. Then assuming

t

is in seconds, the total time upto which both blocks will move together without slipping over each other is

A

B

2 kg

4 kg

respectively are placed one over the other. A horizontal force

F = 2 t

, which varies with time is applied on the upper block. If coefficiet of friction between blocks

A

B

0.5

and horizontal surface is smooth. Then assuming

t

is in seconds, the total time upto which both blocks will move together without slipping over each other is

2 k g

block is placed over a

4 k g

block and both are placed on a smooth horizontal surface. The coefficient of friction between the blocks is

0.20

. The acceleration of the two blocks if a horizontal force of

12 N

is applied to the upper block

(g = 10 m s^{- 2}

)

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