A uniform ladder is tilted against a smooth wall at an angle 60⁰ with the horizontal. The mass of the ladder is 35 kg, and its length is 9.0 m. A man of mass 75 kg is on the ladder at 2.0 m from the lower end while another man of mass 60 kg is on the ladder at 7.0 m. Calculate the friction force needed to prevent slipping.

Q: A 3 m long light (massless) board is supported at each end by cables. A painter weighing 900N stands…

A: We need to calculate tension in both the cables holding the light board.

Q: A 5.00 m, uniform 20 kg ladder rests on a wall, making an angle of 55◦to the ground. There is no…

A:

Q: A 53.9 kg, 4.7 m uniform ladder leans against a frictionless wall. A 81.9 kg person is standing on…

A: Given data- mass of ladder ml=53.9 kg, and length of ladder L=4.7 m mass of person m=81.9 kg, is…

Q: A uniform ladder 12 meters long rests against a vertical frictionless wall, as shown in the figure.…

A:

Q: Equilibrium: A 10.0-kg uniform ladder that is 2.50 m long is placed against a smooth vertical wall…

A:

Q: A house painter stands 3.00 m above the ground on a 5.00-m-long ladder that leans against the wall…

A:

Q: A diving board 3.00 m long is supported at a point 1.00 m from the end, and a diver weighing 500 N…

A:

Q: Resting horizontally, a wheelbarrow has a total mass of 76 kg, with its center of gravity 15 cm from…

A: We will balance the torque : Fx1.4  = 76x9.8x0.15  F= 79.8 N

Q: A uniform pencil is held horizontal with a thumb at the end and index finger under it 3 cm from the…

A: The length of the pencil is 15 m. Its mass is 20 g Thus mass per meter is 2015=1.33 g m-1 So mass of…

Q: An individual leans forwards to pick up a box of 100 N. The weight of his upper body has a magnitude…

A:

Q: What are the forces applied to the board by the posts?

A: the values provided in the question are as follows- mass of board = 34 kg length of board = 4.7m…

Q: A uniform 5.0 m long 25 kg plank is to hold two people washing windows on a downtown skyscraper. The…

A:

Q: A 350 N uniform boom is supported by a perpendicular cable attached at 0.7 its length from the…

A: Weight of rod = 350 Nength of rod =0.7 θ =60° Mass of boom=1050N

Q: Resting horizontally, a wheelbarrow has a total mass of 65 kg, with its center of gravity 12 cm from…

A: Given: Mass of wheelbarrow: m=65 [kg] The distance of handles from the axle is: d1=1.3 [m] The…

Q: A person with weight 900 N stands d = 4.00 m away from the wall on al = 6.00 m beam, as shown in thi…

A: Given: The weight of the person is 900 N.             The distance of the person from the wall is 4…

Q: A uniform ladder of length 7m and mass 15kg, rests in limiting equilibrium against a smooth vertical…

A: According to Newton's second law Net force = mass × acceleration FBD of the system

Q: e bones of the forearm about 2.15 cm beyond the joint. Assume the forearm has a mass of 2.45 kg and…

A: Given values:- Biceps muscle connects to the bones of the forearm,(r0)=2.15 cm=0.0215 m -----(1)…

Q: Abeam with a length of 3.50 m and a weight of 200 N is attached on one end to a vertical wall with a…

A: Given, Weight of beam, W=200N Length of a beam, L=3.5m Weight of the box, w=50N   Let the reactions…

Q: The topic is torque A uniform horizontal beam is attached to a wall by a pin connection that allows…

A: Let the Tension be T Weight of beam (Wb) = Mg Wb = 35.7×10 =357 N Weight of the person (Wp) = mg=600…

Q: f mass M has an empty paint can of mass m hanging from one end. The meter stick and the can balance…

A: Given:-  The mass of the meter stick is M  The mass of the empty can is m hanging from one end.  The…

Q: The 3 m long uniform plank is supported by a fulcrum at the midpoint. Where should a 45 kg student…

A:

Q: A stationary 3.0-m board of mass 7.0 kg is hinged at one end. A force F is applied vertically at the…

A: First we draw the Freebody diagram, From the diagram it is clear that torque is zero, so,

Q: A 560 N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A: Apply the condition of equilibrium. The summation of moments about the hinge.ΣM = 0560(4) + 80(3) -…

Q: A beam is connected to the floor by a hinge. A rope is attached to the other end of the beam. The…

A: Given Data : The tension in the string is given as T = 150.7N. The mass of the box is given as mb =…

Q: The right end of a 3.0-meter metal beam is attached to a hinge on the ceiling, while the left end of…

A:

Q: A uniform ladder of mass (m = 13.0 kg) and length (L) leans against a frictionless wall, see figure.…

A:

Q: None

A:

Q: 53 5 m A uniform 80N beam that is 5 m long is attached to a wall by a cable as shown in the figure.…

A:

Q: A beam of mass M and length L is hanging from a rope, perpendicular to a wall. The rope is attached…

A: The mass of the beam: M The length of the beam: L

Q: A 94.5 kg window-washer is working on a uniform plank of 132 kg and length 16.3 m is supported at…

A:

Q: A beam rests on a fulcrum, 1.9 meters from one end. A weight of 218 kg is suspended from this end…

A:

Q: A 53.9 kg, 4.7 m uniform ladder leans against a frictionless wallA 81.9 kg person is standing on the…

A:

Q: in length with m

A: GivenLenth of plank, L=8 mMass of plank, M=65 kg

Q: The uniform 7.9-m pole has a mass of 145 kg and is supported as shown. Calculate the force Prequired…

A:

Q: A beam is connected to the floor by a hinge. A rope is attached to the other end of the beam. The…

A: Given: The angle between the rope and the horizontal = 21o Tension (T) = 190.2 N;

Q: À uniform ladder of mass 21 kg and length 6.2 m leans against a smooth wall at an angle 64° with…

A: Mass of ladder, M = 21 kg Length of ladder, l = 6.2 m Angle between bottom of the ladder and the…

Q: uniform board of length 14 m weighing 250 N is supported by ropes at each end. A boy weighing 600 N…

A:

Q: A uniform 8.00 m, 1500 kg beat is hinged to a wall and supported by a thin cable attached 2.00 m…

A:

Q: 5.0m long uniform ladder leans against a smooth wall and its base rests on a rough floor. The ladder…

A: Mass of ladder m= 18.0kg Length of ladder L = 5.0 m The base of ladder is a distance of  d= 2.3 m…

Center of Gravity of a system

The centre of gravity is a property that is based on the geometry of a rigid body or any particle. It is described as an equilibrium point or a hypothetical location where the total weight of the body is concentrated.