How Does Newton's 2nd Law Apply to a Skateboard Pushed by a Cane?

AI Thread Summary
The discussion revolves around applying Newton's 2nd Law to a scenario involving a skateboard being pushed by a cane. The skateboard has a mass of 3.5 kg, and a force of 115 N is applied at a 60-degree angle. Participants calculated the horizontal force and initial acceleration, with initial results yielding 67.55 N and 19.3 m/s², respectively. However, it was identified that a miscalculation occurred due to the calculator being set to gradients instead of degrees, leading to the correct answers of 58 N and 16 m/s². The conversation highlights the importance of ensuring proper calculator settings when performing physics calculations.
HelloMotto
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Homework Statement



A man walking with aid of a cane approaches a skateboard (mass 3.5 kg) lying on the sidewalkk. Pushing with an angle of 60 down from the horizontal with his cane, he applies a force of 115N, which is enough to roll the skateboard out of the way.
a) calculate the horizontal force acting on the skateboard
b) calculate the initial acceleration of the skateboard.

The Attempt at a Solution


Fa = ma
115cos60 = 3.5(a)
a = 19.3 m/s2
Fx = 67.55 N.

My answer was wroung T_T
what did i miss?
 
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the setup looks right. did you double check your calculations? i got different answers.

edit: looks like your calculator is set on gradients, not degrees.
 
yea I am pretty sure i did. But the answer is supposed to be 58 N and 16m/s2

edit : lol i feel like an idiot >< thank you
 
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