Question

A force of 10 kg watt acting on a certain mass for 2 seconds gave it a velocity 10 metre per second .What is the mass in kg

Answer 1

Explanation:

Answer:

19.6 kg

Explanation:

Given :

To find the value of mass in kg if, a force of 10kg weight acts on a certain mass for 2 second gave it a velocity of 10 m/s.

(given g = 9.8 m/s²)

Solution :

We know that,

F = m_1a_1 = m_2(\frac{v - u}{t} )F=m

1

a

1

=m

2

(

t

v−u

)

m_1m

1

= 10 kg (given)

a = g = 9.8 m/s² (given)

v = 10 m/s (given)

u = 0 m/s (given)

t = 2 seconds (given)

_

m_1a_1 = m_2(\frac{v - u}{t} )m

1

a

1

=m

2

(

t

v−u

)

⇒ 10 \times 9.8 = m_2 \times \frac{10 - 0}{2}10×9.8=m

2

×

2

10−0

⇒ 98 = 5 m_298=5m

2

⇒ m_2 = \frac{98}{5} = 19.6m

2

=

5

98

=19.6 kg

Hope it is helpful to you!!!