Two blocks, A and B, are connected by a rope. A second rope is connected to block B and a steady, horizontal tension force of T is applied. The system moves at a constant speed across the ground. Block B experiences a friction force of f. T = 50N f = 10N
What is friction force acting on block A?

40 N

Explanation:

We are given that

Speed of system is constant

Therefore, acceleration=a=0

Tension applied on block B=T=50 N

Friction force=f=10 N

We have to find the friction force acting on block A.

Let T' be the tension in string connecting block A and block B and friction force on block A be f'.

For Block B

Where =Mass of block B

Substitute the values

For block A

Where Mass of block A

Substitute the values

Hence, the friction force acting on block A=40 N

think about the oscillation of the toy shown in the video. when the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.