In the y-direction:
N = mg + Fsin25°
In the x-direction:
Fcos 25° = μsN
Substitute for N in the equation in the x-direction.
A contestant in a winter sporting event pushes a 45.0-kg block of ice across a frozen lake as shown in the figure. Gine the coefficient of static friction to be μs = 0.1, and the coefficient of kinetic friction to be μk = 0.03
(a) Calculate the minimum force F he must exert to get the block moving.
(b) What is the magnitude of its acceleration once it starts to move if that force is maintained?
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Intro to Forces + Newton's Laws concept. You can view video lessons to learn Intro to Forces + Newton's Laws. Or if you need more Intro to Forces + Newton's Laws practice, you can also practice Intro to Forces + Newton's Laws practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Alabugin's class at FSU.