Question #104513

A child pushes a 31-kg shopping cart by a force of 120 N in a supermarket at angle of 25 degrees above the horizontal. If the cart experiences a friction force of 50 N that acts simultaneously on it, calculate the magnitude of its horizontal acceleration.

Bonus: Calculate the normal force acting on the cart.

Bonus: Calculate the normal force acting on the cart.

Expert's answer

"31a=120\\cos{25}-50"

"a=1.9\\frac{m}{s^2}"

The normal force acting on the cart:

"N=(31)(9.8)-120\\sin{25}=250\\ N"

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