Question

Anna pushes horizontally on a 52-kg penguin with force of 10 N, but the penguin does not budge. Find the force of static friction between the penguin’s feet and the ground.

I have no idea where to start. Any help is appreciated. Thanks.

Answer 1

If the penguin isn't budging, the friction force equals the opposing force, 10 N.

This may be much less than the maximum static friction force possible, which is
52*g*mu(static).

Answer 2

Oh ok. Thanks this makes much more sense now.