Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

When a horizontal force P acts on a cart of mass 20 kg,it moves with a uniform velocity on a horizontal floor. When a force of 1.2P acts

on the cart, it moves with an acceleration of 0.05 metre per second square. Find the value of P.



This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The horizontal floor has a frictional force F that inhibits the movement of the cart.

Acceleration of cart = P - F = 0 as the cart moves with constant velocity and acceleration is 0
                   So F = P

When a force of 1.2 P acts on the cart, acceleration a of the cart is
                1.2 P - F = m a
               1.2 P - P = 20kg * 0.05 m/sec²

                P = 1/0.2 = 5 Newtons

2 5 2
what does it mean "1.2P - F = m a"?
net force or resultant of forces 1.2P and Frictional force, causes an acceleration a in the cart.
are u 11th class manish?
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts