Answer to Question #135616 in Classical Mechanics for Eva

Question

Jamal pulls a 150N sled up a 24° slope at constant speed by a force of 100N. Near the top of hill , he releases the sled. With what acceleration does the sled go down the hill?

Answer 1

solution

given data

weight of sled (W)=150 N

slope of hill=24⁰

so mass of sled (m)=$\frac{150}{9.8}=15.31kg$

when sled will be released then it will come down due to the force of gravity witch is parallel to the slope of hill

so

$150\sin20=ma$

$a$ =acceleration of sled when released

$a=\frac{150\times.40}{15.31}=3.9\text m/s^2$

so acceleration of sled will be 3.9m/s^2