A fireman (mass of 100 kg) jumps on the station’s firepole. The force of gravity pulls him down with 1000 N. A few feet down the pole, he is traveling toward the ground at a constant velocity. The frictional force (exerted by his hands on the pole) opposing the fireman’s weight is?
Note- since speed of fireman is constant, friction force on him by pole is equal to his weight. And equal friction force his fingers exert on the pole.
A fireman (mass of 100 kg) jumps on the station’s firepole. The force of gravity pulls...
The alarm at a fire station rings and a 81-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 4.5 m). Just before landing, his speed is 1.3 m/s. What is the magnitude of the kinetic frictional force exerted on the fireman as he slides down the pole?
The alarm at a fire station rings and a 94-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 4.5 m). Just before landing, his speed is 1.3 m/s. What is the magnitude of the kinetic frictional force exerted on the fireman as he slides down the pole?
Responding to an alarm, a 75 kg fireman slides down a pole to the ground floor, 3.2 m below. The fireman starts at rest and lands with a speed of 3.9 m/s. (a) Find the average force exerted on the fireman by the pole. N (b) If the landing speed is half that in part (a), is the average force exerted on the fireman doubled? yes no Explain. . (c) Find the average force exerted on the fireman when the...
Responding to an alarm, a 77 kg fireman slides down a pole to the ground floor, 3.9 m below. The fireman starts at rest and lands with a speed of 3.6 m/s. (a) Find the average force exerted on the fireman by the pole. N (b) If the landing speed is half that in part (a), is the average force exerted on the fireman doubled? yes or no Explain. (c) Find the average force exerted on the fireman when...
Responding to an alarm, a 96 kg fireman slides down a pole to the ground floor, 3.2 m below. The fireman starts at rest and lands with a speed of 3.6 m/s. (a) Find the average force exerted on the fireman by the pole. N (b) If the landing speed is double that in part (a), is the average force exerted on the fireman halved? yes or no Explain. (c) Find the average force exerted on the fireman when...
Responding to an alarm, a 75 kg fireman slides down a pole to the ground floor, 3.2 m below. The fireman starts at rest and lands with a speed of 3.5 m/s. (a) Find the average force exerted on the fireman by the pole. N (b) If the landing speed is half that in part (a), is the average force exerted on the fireman doubled? yes no Explain. This answer has not been graded yet. (c) Find the average force...
A 107 kg fireman jumps from the top of a 2.4 m vertical wall onto a level sidewalk. Using a coordinate system which has + i cap horizontally and + J cap vertically upwards, his initial velocity is vector v_0 = +0.65 i cap + 0.30j cap m/s. How far from the base of the wall docs he land What is his velocity when his feet hit the sidewalk If he 'stops dead' what impulse does he experience from the...
Starting from rest, a 90-kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 805 N, and his speed at the bottom of the pole is 3.1 m/s. How far did he slide down the pole?
A 82 kg person has his center of gravity 1.0 meters above the ground in a standing position (height that person comes off the ground during a jump). During a squat jump, he crouches down so that his centre of gravity is 0.3 meters above the ground. As he jumps, he exerts an average force of 1258 Newtons against the ground. You can think of this average exerted force as the average normal force or average ground reaction force being...
a person jumps from the roof of a house 2.8 m high when he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70 m if the mass of his torso ( excluding legs ) is 42 kg. find his velocity before his feet strike the ground the average force exerted