Auniform ladder of length 2.1 m and mass 20 kg leans against a vertical wall to make an angle of a = 45° with the ground, as shown in the figure. Assume that there is no friction between the vertical wall and the top of the ladder and that the coefficient of friction between the ground and the bottom of the ladder is u =0.24. A horizontal force Pis applied to the middle of the ladder. Take the gravitational acceleration to be g = 9.81 ms 2. What is the minimum value of P (in Newtons) required to prevent downward sliding of the ladder? a

Q: A wooden beam ( sg = 0.64) is 100mm by 100mm by 6m and is hinged at A as shown in figure2. Assuming…

A: Specific gravity of wooden beam=0.64 Area of beam=100*100 mm2

Q: The cylinder in the figure below, having a mass of 100 kg is to be supported by the cord that wraps…

A: The given data is: Mass=100 g β=540° and β=540°×π180  =3π radian μs = 0.3

Q: WILEY 11.63 PLUS A sphere of diameter 100 mm, rotating at a rate of 286 rpm, is situated in a stream…

A:

Q: The uniform 5.3-m pole has a mass of 260 kg and is supported as shown. Calculate the force P…

A: Given:- Mass of pole, m=260 kgLength of pole, L=5.3 mCoefficient of friction, μ=0.29 To find:-…

Q: The mobile crane (weight = 38 kN) shown in the figure moves across the bridge of length, /= 12 m.…

A:

Q: A 1,100-N uniform boom at p = 67.0° to the horizontal is supported by a cable at an angle = 23.0° to…

A: Given, M = 1100 N  ϕ = 67o  θ = 23o W = 1750 N

Q: Referring to the figure, block A and B have masses of 14 kg and 9 kg respectively. A horizental rope…

A: Given: The mass of block A is 14 kg. The mass of block B is 9 kg. The coefficient of friction…

Q: 1. In the figure, two blocks are separated by a uniform strut attached to each block with…

A: Given Weight of Block A= 400 lb  Weight of Block B= 300 lb

Q: A 1,100–N uniform boom at ? = 58.0° to the horizontal is supported by a cable at an angle ? = 32.0°…

A:

Q: A box with a mass of 5 kg is moving down the inclined plane at a constant speed of 6 m/s. The…

A: The values and diagram given in the question are as follows: Mass of block(m)= 5 kg Constant…

British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.