Question

Asked Jun 13, 2019

1 views

a bridge across a small stream is made by supporting a 10m long log with a mass of 75kg with ropes tied at the ends of the log to the tree on the banks. the rope on the right makes a 25 degree angle with the ground. the rope on the left makes a 20 degree angle with the ground. a 25kg child us standing 7.5 m from the left bank. write the net force equation for the y direction. write the net force equation for the x direction. write the torque equation (use the left end of the log as the axis of rotation).

Step 1

Let the mass of the log is M and the mass of the child is m. For y direction the torque equation is given by equation (1). The sum of forces acting along x and y direction will be zero.

Step 2

The equilibrium moment about left end of the log is zero.

Step 3

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: The figure shows a rectangular, 27-turn coil of wire, of dimensions 15 cm by 8.3 cm. It carries a cu...

A: Click to see the answer

Q: A 1.7 kg body oscillates in SHM on a spring that, when extended 2.4 mm from its equilibrium position...

A: Write the expression for the angular frequency of oscillation.

Q: A man is holding an 8.00-kg vacuum cleaner at arm's length, a distance of 0.550 m from his shoulder....

A: The weight of the vacuum cleaner is 8.00 kg, its distance from the shoulder is 0.550 m and it is hel...

Q: A car accelerates uniformly from rest to 24.2 m/s in 8.46 s along a level stretch of road. Ignoring ...

A: The initial velocity of car = 0 m/s.The final velocity = 24.2 m/s.The time taken by the car to acce...

Q: Three polarizing disks whose planes are parallel and centred on common axis. The directions of their...

A: Given:

Q: The figure shows two concentric rings, of radii R and R' = 2.54R, that lie on the same plane. Point ...

A: write the expression of electric field on the axis of the small ring.

Q: In the figure, set R = 266 Ω, C = 54.6 μF, L = 263 mH, fd = 60.0 Hz, and εm = 7.49 V. What are (a) Z...

A: Given,

Q: Two blocks are sliding to the right accross a horizontal surface, as the drawing shows. In Case A th...

A: Consider the figure, the free body diagram of block 1 and block 2 for the two-block system is shown....

Q: Chapter 28, Problem 060 Your answer is partially correct. Try again. The figure shows a current loop...

A: The sides of the loop are parallel to the co-ordinate axis shown with AB=20.4 cm, BC=25.4 cm, and FA...