Question

A of mass 10 kg starts from rest and rolls down an inclined plain. it rolls down 10 metrein 2 seconds? t=4.47sec
( a)what is the acceleration attained the body ?
( b) what is the velocity of the body at 2s?
( c) what is the force on the body

Answer 1

Answer:

Force acting on the body is 50N

Explanation:

(a) Distance travelled= 10m. , Time= 2s

Using the formula,

S= ut+ 1/2 at. square

10=0×2+1/2×a×2. square

10= 2a

a= 10/2 = 5m/s. square

(b) Acceleration=5m/s. square

time= 2s

v= u+at

v=0+2×5. , v= 10m/s

(c) mass= 10kg

Acceleration= 5m/s. square

F= ma

= 10×5

= 50N

So, Force acting on the body is 50N

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