Estimate what power must a motor have to perform this task

Reference no: EM13557685

A skier of mass 61 kg ispulled up a slope by a motor-driven cable.

(a) How much work is required to pull him70 m up a 30° slope (assumedfrictionless) at a constant speed of 1.9 m/s?

(b) What power must a motor have to perform this task?

Reference no: EM13557685

Questions Cloud

Consider two uniformly charged parallel plates as shown : Consider two uniformly charged parallel plates as shown in the figure. The magnitudes of the charges areequal.If the plates are 1.0 cm by 1.0 cm squares,and the charges on the plates are +/- 2.6 μC respectively,what is the magnitude of the electric f..

How fast can the car go without skidding : A 2000 kg car rounds a circular turn of radius 20 m. If theroad is flat and the coefficient of friction between tires and roadis 0.70, how fast can the car go without skidding

Determine the break-even fueleconomy ratio : It is currently popular for automobiles to use 10% ethanol / 90%gasoline mixtures (‘gasohol’) as fuel. According topopular consensus the main benefit of gasohol use is that it“reduces our dependence upon foreign oil.” Determine the ‘break-even’ fu..

Determine the force exerted by horizontal rope on her arms : A 55.0 kg ice skater is moving at 4.00 m/s when she grabs theloose end on a rope, the opposite end of which is tied to a pole. Determine the force exerted by the horizontal rope on her arms

Estimate what power must a motor have to perform this task : A skier of mass 61 kg ispulled up a slope by a motor-driven cable. What power must a motor have to perform this task

What is the average power during an upward cruise : A 650 kg elevator startsfrom rest and moves upward for 4.30 swith constant acceleration until it reaches its cruising speed,1.84 m/s. What is the average power during an upward cruise with constantspeed

Obtain what is the volume rate of flow : A 6cm diameter horizontal pipe gradually narrows to 4cm. Whenwater flows throught this pipe at a certain rate, What is the volume rate of flow

Hypodermic syringe contains medicine with density of water : A hypodermic syringe contains a medicine with the density of water (see figure below). The barrel of the syringe has a cross-sectional area of 2.50 x 10^-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm.

Compute its translational and rotational speeds : A sphere of radius 20.0cm and mass 1.80 kg starts from rest and rolls without slippingdown a 30.0º incline that is 10.0 m long. Calculate its translational and rotational speeds when it reaches the bottom

User Account

All Pages