a total of 490 j of work is needed to lift a body of an unknown massthrough a height of 10m. what is it mass
You do 200 J of work to lift a certain rock by 3.0m at a constant velocity. (a) Determine the mass of the rock. (b) You drop the rock from the 3.0m height onto the ground. Determine the Kinetic Energy of the rock just before it hits. c) Find the velocity of the rock just before it hits. K.E. = 200 J V = 3.0m K.E. = 1/2 mv^2 200 = 1/2 (9) m 4.5/4.5 m = 200/4.5 m =...
How much work do you do, when you lift a mass (4.0kg) from the ground to a height of 6.0 m in 11 seconds? Answer: ____ J
What is the total number of calories needed by one person dependent on? body mass O age height gender O all of the above Question 4 (1 point) v Saved The accumulation of an extra calories adds one pound of weight. 1000 1500 2000 O 3500
Energy & Work A elevator has 120505 J of work done on it to ralse it 5.7 m, how much force is needed to lift the elevator (and passengers) if it rising at a constant speed? Answer: 21141.23 N Check Correct Marks for this submission: 1.00/1.00. What is the mass of the elevator (and passengers) if it rising at a constant speed? ofAnswer: 120505 kg Check Incorrect Marks for this submission: 0.00/1.00
Calculate the Amount of Work Done to Lift an Object and Cable Question We use a rope with a linear mass density of 20 kg/m to lift a block of cement weighing 1000 kg 50 meters above the ground. The rope is 75 meters long but we need an additional 100 meters to secure the concrete block so it can be lifted safely. Find the total amount of work done (in kilojoules, remembering that (1 kJ = 1000 J). Do...
How much work (in kJ) is required to lift a 35.8 kg mass to a height of 1.02 m above the floor?
(a) Calculate the work done (in J) on a 1450 kg elevator car by its cable to lift it 39.0 m at constant speed, assuming friction averages 145 N (b) What is the work done (in J) on the lift by the gravitational force in this process? (c) What is the total work done (in 1) on the lift?
To work on your car you use a hydraulic lift as shown in the diagram. It confines a fluid with ρ = 2.16 kg/m3.Your car has mass Mcar = 980 kg. The lift piston has mass Mpiston = 225 kg. The input piston (on the left) is massless and has an area of 0.785 m2. The lift piston (on the right) has an area of 4.14 m2. 1. The lift piston base and the input piston base are at the...
QUESTION 13 What power is needed to lift a 221 kg crate of bricks from the ground to the top of a 10-m-high building in 3 minutes? Give your answer in Watts. QUESTION 14 LPGA golfer Amy Olson hits a golf ball at a 35.0 degree angle above the horizontal (from ground level). If the ball is moving at a speed of 180.0 miles per hour, what is the maximum height it will reach? (Watch your units] 108.6 m 90.2...
. A pump is needed to lift 1200 L of water per minute a distance of 75 m. What power (in kW) must the pump deliver? (1 L of water has a mass of 1 kg.)