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QUESTION 10 A 110 kg skydiver falls due the force of gravity. The magnitude of the...
A skydiver of mass m jumps from a hot air balloon and falls a distance d before reaching a terminal velocity of magnitude v
A skydiver of mass m jumps from a hot air balloon and falls a distance d before reaching a terminal velocity of magnitude v . Assume that the magnitude of theacceleration due to gravity is g .-What is the work (Wd) done on the skydiver, over the distance , by the drag force of the air?-Find the power (P d) supplied by the drag force after the skydiver has reached terminal velocity v.
A 50kg skydiver jumps out of an airplane. We assume that the forces acting on the body are the force of gravity and a retarding force of air resistance with direction opposite to the direction of motion and with magnitude cv^2 where c=.1275 kg/m and i
A 50kg skydiver jumps out of an airplane. We assume that the forces acting on the body are the force of gravity and a retarding force of air resistance with direction opposite to the direction of motion and with magnitude cv^2 where c=.1275 kg/m and is the velocity of the skydiver at time t (and upward is positive velocity). The gravitational constant is 9.8 m/s^2 . a) Find a differential equation for the velocity. b) Determine the terminal velocity in...
A fireman (mass of 100 kg) jumps on the station’s firepole. The force of gravity pulls...
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?
QUESTION 9 To maintain a constant speed, the force provided by a car's engine must equal...
QUESTION 9 To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). What is the drag force at 57.2 MPH for a Hummer H27 (Drag area for Hummer is 2.44 m2 and look up Table 5.2, chap-5 for the drag coefficient) Express your answer in N with 3 significant figures. QUESTION 10 Calculate the terminal velocity a spherical rain drop, diameter 4.06...
QUESTION 1 A Mercedes-Benz 300SL, mass = 1,731 kg, is parked on a road that rises...
QUESTION 1 A Mercedes-Benz 300SL, mass = 1,731 kg, is parked on a road that rises above the horizontal 11 degrees. What is the magnitude of the normal force in N with 3 significant figures? (acceleration due to gravity = g =9.80 m/s-, down) QUESTION 2 A Mercedes-Benz 300SL, mass = 1,683 kg, is parked on a road that rises above the horizontal 19 degrees. What is the magnitude of the static frictional force that the ground exerts on the...
A boy pushes a lawn mower (m 17.9 kg) star ting from rest across a horiz ontallawn by applying a force of 32.9 N straight along the handle, which is inclinedat an angle of 35.1° above the horizontal
A boy pushes a lawn mower (m 17.9 kg) star ting from rest across a horiz ontallawn by applying a force of 32.9 N straight along the handle, which is inclinedat an angle of 35.1° above the horizontal. The magnitude of the mower’s accelerationis 1.37m/s 2, which lasts for 0.58 s, after which the mower moves at aconstant velocity. Determine the magnitude of(a) the normal force on the mower(b) the frictional force on the mower(c) the maximum velocity of...
A storeho use worker pushes a box with a refrigerator (mass:96.0-kg) at constant velocity for a distance of 11.0 m. He pushes in the direction parallel to the horizontal floor. A 250.0-N friction...
A storeho use worker pushes a box with a refrigerator (mass:96.0-kg) at constant velocity for a distance of 11.0 m. He pushes in the direction parallel to the horizontal floor. A 250.0-N frictional force opposes the motion of the box. Use Newtons second law and definition of work to answer the questions below. (a) (1 point) What is the acceleration of the box? as (b) (2 points) What is the net force, acting on the box? Write down Newtons second...
For 7-9: A skydiver falls ot constant, terminal velocity in the presence of air resistance 7....
For 7-9: A skydiver falls ot constant, terminal velocity in the presence of air resistance 7. (3 pts) The net work done on the skydiver is.. a) positive b) negative c) zero 8. (3 pts) The non-conservative work done on the skydiver is.. a) positive b) negative c) zero 9. (3 pts) The mechanical energy of the skydiver is. a) conserved c) decreasing b) increasing For each problem, show all work for full credit. Use at least three significant figures...
Kramer goes bowling and decides to employ the force of gravity to "pick up a spare."...
Kramer goes bowling and decides to employ the force of gravity to "pick up a spare." He rolls the 8.00 kg bowling ball very slowly so that it comes to rest a center-to-center distance of 0.115 m from the one remaining 2.25 kg bowling pin. Treat both the ball and the pin as point objects, and determine the magnitude of the force of gravity Fray between them. ligravl = Treat both the ball and the pin as extended objects with...
A force of constant magnitude pushes 6.5-kg box 3.4 m up a vertical surface, as shown...
A force of constant magnitude pushes 6.5-kg box 3.4 m up a vertical surface, as shown in the figure. The coefficient of friction is 0.35 and the angle θ is 30.0°. a) Determine the work done on the box by F. b) Determine the work done on the box by the force of gravity. c) Determine the work done on the box by the normal force. d) Determine the increase in gravitational potential energy of the system of the box...
QUESTION 9 To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). What is the drag force at 57.2 MPH for a Hummer H27 (Drag area for Hummer is 2.44 m2 and look up Table 5.2, chap-5 for the drag coefficient) Express your answer in N with 3 significant figures. QUESTION 10 Calculate the terminal velocity a spherical rain drop, diameter 4.06...
QUESTION 1 A Mercedes-Benz 300SL, mass = 1,731 kg, is parked on a road that rises above the horizontal 11 degrees. What is the magnitude of the normal force in N with 3 significant figures? (acceleration due to gravity = g =9.80 m/s-, down) QUESTION 2 A Mercedes-Benz 300SL, mass = 1,683 kg, is parked on a road that rises above the horizontal 19 degrees. What is the magnitude of the static frictional force that the ground exerts on the...
A storeho use worker pushes a box with a refrigerator (mass:96.0-kg) at constant velocity for a distance of 11.0 m. He pushes in the direction parallel to the horizontal floor. A 250.0-N frictional force opposes the motion of the box. Use Newtons second law and definition of work to answer the questions below. (a) (1 point) What is the acceleration of the box? as (b) (2 points) What is the net force, acting on the box? Write down Newtons second...
For 7-9: A skydiver falls ot constant, terminal velocity in the presence of air resistance 7. (3 pts) The net work done on the skydiver is.. a) positive b) negative c) zero 8. (3 pts) The non-conservative work done on the skydiver is.. a) positive b) negative c) zero 9. (3 pts) The mechanical energy of the skydiver is. a) conserved c) decreasing b) increasing For each problem, show all work for full credit. Use at least three significant figures...
Kramer goes bowling and decides to employ the force of gravity to "pick up a spare." He rolls the 8.00 kg bowling ball very slowly so that it comes to rest a center-to-center distance of 0.115 m from the one remaining 2.25 kg bowling pin. Treat both the ball and the pin as point objects, and determine the magnitude of the force of gravity Fray between them. ligravl = Treat both the ball and the pin as extended objects with...
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