Chapter 8, Problem 26A

Calculate the impulse when an average force of 10 N is exerted on a cart for 2.5 s.

To determine

The impulse for a given average force exerted on a cart for a particular duration

Answer to Problem 26A

The impulse on the cart is $25\text{kg}-\text{m/s}$

Explanation of Solution

Given:

An average force of 10 N is exerted on a cart for 2.5 s.

Formula used:

When a force F is applied on a body for a particular duration t, then it produces an impulse, expressed as,

  $\text{Impulse}=Ft$

Calculation:

Here, an average force of 10 N is exerted on the cart for duration of 2.5 s. This gives an impulse of

  $\begin{array}{c}\text{Impulse}=Ft\\ =10\times 2.5\\ =\text{25 kg-m/s }\end{array}$

Conclusion:

The impulse on the cart is $25\text{kg}-\text{m/s}$ .