Question

Grandma Jones is trying to load a wooden crate full of apples into her truck. To accomplish this, she plans to slide the crate up along a board. If the crate has a mass of 50 kg and the board is at an 30º incline, what is the maximum force she must apply parallel to the board to move the crate at constant velocity into her truck if the coefficient of friction is 0.25?

Answer 1

306.56N

Step-by-step explanation:

Hi!

To solve this problem follow the steps below, the procedure is attached in an image

1. Draw the complete outline of the problem.

2.

the velocity is constant so the sum of forces parallel to the ramp must be equal to zero.

Therefore we add these forces and find the characteristic equation of the system of forces on the X axis.

replace the values ​​to find the strength made by grandma