Solve Motion & Force: Qs 41 & 42 in Image

[siddscool19]

Homework Statement

Q 41 and 42 in the given image.

Homework Equations

Don't know what should be here.

The Attempt at a Solution

I wasn't able to start the question also since I don't know the basics of these questions but still these are coming in our entrance exams.

 

[Redbelly98]

Homework Equations

Don't know what should be here.

Welcome to PF.

Generally, we do want to see people list relevant equations and give a try at solving the problem before getting help.

That being said, these problems involve conservation of energy, kinetic energy, and/or potential energy. What equation(s) are related to those concepts?

 

[nlightner]

Can you please provide me with a reference or some guidance on how to approach these types of questions?

Sure, I can provide some guidance on how to approach these types of questions. First, it's important to understand the basic concepts of motion and force, such as velocity, acceleration, and Newton's laws of motion. Once you have a good understanding of these concepts, you can start solving problems like Q 41 and 42.

For Q 41, you are given a diagram with a block and two pulleys connected by a rope. The block has a mass of 5 kg and is being pulled by a force of 20 N. To solve this problem, you can use Newton's second law, which states that the net force acting on an object is equal to its mass multiplied by its acceleration (F=ma). In this case, the net force acting on the block is the force of 20 N pulling it, and the mass is 5 kg. So, you can use the equation F=ma to calculate the acceleration of the block. Once you have the acceleration, you can use the kinematic equations to solve for the distance and time it takes for the block to reach the bottom.

For Q 42, you are given a diagram with a spring and a block attached to it. The block has a mass of 2 kg and is being pulled by a force of 10 N. To solve this problem, you can use Hooke's law, which states that the force exerted by a spring is directly proportional to the displacement of the spring (F=-kx, where k is the spring constant and x is the displacement). In this case, the force of 10 N is equal to the force exerted by the spring, so you can use F=-kx to solve for the spring constant. Once you have the spring constant, you can use the equation for the period of a mass-spring system (T=2π√(m/k)) to calculate the period of oscillation for the block.

It's also important to practice solving problems similar to Q 41 and 42, as well as understanding the concepts behind them. I recommend looking for practice problems and working through them with the help of a textbook or online resources. Good luck!