How much work is done if the same tension is directed

Assignment Help Physics

Reference no: EM13645053

1.) A 204 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.820, and the log has an acceleration of 0.800 m/s2. Find the tension in the rope.

2.) The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W = 58300 N. The lift force generated by the rotating blade makes an angle of 21.0° with respect to the vertical.

(a) What is the magnitude of the lift force?

(b) Determine the magnitude of the air resistance that opposes the motion.

3.) A person pulls a toboggan for a distance of 30.0 m along the snow with a rope directed 20.0° above the snow. The tension in the rope is 86.0 N.

(a) How much work is done on the toboggan by the tension force?

(b) How much work is done if the same tension is directed parallel to the snow?

4.) A 5.70 x 10² kg hot-air balloon takes off from rest at the surface of the earth. The nonconservative wind and lift forces take the balloon up, doing +9.70 x 10⁴ J of work on the balloon in the process. At what height above the surface of the earth does the balloon have a speed of 8.80 m/s?

Reference no: EM13645053

Questions Cloud

Calculate the flux of the electric field created by the : consider a uniformly charged cylinder radius r height h charge density rho. imagine it at the center of a mathematical

Calculate the span of a differential pressure transmitter : calculate the span of a differential pressure transmitter that is mounted 10 inches below the bottom instrument tap on

In a pavement study the diameter of the aggregate stones is : a in a pavement study the diameter of the aggregate stones is found to be normally distributed with a mean of 4 cm and

An argon ion laser puts out 56 of continuous power at a : an argon ion laser puts out 5.6 of continuous power at a wavelength of 532 . the diameter of the laser beam is 6.0 . if

How much work is done if the same tension is directed : 1. a 204 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. the ramp is

Assuming that the isothermal coefficient of compressibility : assuming that the isothermal coefficient of compressibility is constant determine the percent decrease in the volume of

Calculate the melting point of ice under a pressure of 10 : calculate the melting point of ice under a pressure of 10 mpa. assume that the density of ice under these conditions is

The km of an enzyme of an enzyme-catalyzed reaction is 65 : the km of an enzyme of an enzyme-catalyzed reaction is 6.5 m. what substrate concentration will be required to obtain

If you are told that the purity of compound z is 87 and : if you are told that the purity of compound z is 87 and the reported value for its molar extinction coefficient is 9200

User Account

All Pages