A 1.80x10^4 kg semi-trailer truck drives up a 200 m hill [θ = 30 degrees above horizontal], at a constant speed of 25.0 m/s. The force of friction is 6.00x10^2 N. Write an equation to isolate and solve for P.
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A 1.80x10^4 kg semi-trailer truck drives up a 200 m hill [θ = 30 degrees above horizontal], at a constant speed of 25.0 m/s. The
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- A student is asked to measure the acceleration of a glider on a frictionless, inclined plane, using an air track, a stopwatch, and a meterstick. The top of the track is measured to be 1.774 cm higher than the bottom of the track, and the length of the track is d = 127.1 cm. The cart is released from rest at the top of the incline, taken as x = 0, and its position x along the incline is measured as a function of time. For x values of 10.0 cm, 20.0 cm, 35.0 cm, 50.0 cm, 75.0 cm, and 100 cm, the measured times at which these positions are reached (averaged over five runs) are 1.02 s, 1.53 s, 2.01 s, 2.64 s, 3.30 s, and 3.75 s, respectively. (a) Construct a graph of x versus t2, with a best-fit straight line to describe the data. (b) Determine the acceleration of the cart from the slope of this graph. (c) Explain how your answer to part (b) compares with the theoretical value you calculate using a = g sin as derived in Example 4.3.A block of mass 4.6 kg is sliding down a ramp with an initial speed of 1.5 m/s. The ramp is inclined from the horizontal by an angle theta = 34.9 degrees and the coefficient of kinetic friction is uk = 0.73. What is the magnitude of the displacement of the block along the ramp from the initial time until it stops?Q 5)A force vector F =3i + 3j N is applied on 5 kg mass of body on nonfrictionless horizontal surface. The velocity function of body is v = t + 2 . find the following : 1) frictional force (fs ) 2) the coefficient of friction of surface (μ) . (answer fs =1.7 N , u =0.34)
- Homework 7, Problem 6: A vertical spring has a length of 0.25 m when a 0.225 kg mass hangs from it, and a length of 0.775 m when a 2.1 kg mass hangs from it. Part (a) What is the force constant of the spring, in newtons per meter? k = ______ Part (b) What is the unloaded length of the spring, in centimeters? L0 ______A horizontal force is applied to an object weighing 392 N that causes its speed to increase uniformly from 0 m/s to 6 m/s in 3 seconds. If we disregard the friction value, calculate the applied forceGiven a drag coefficient of 0.42 kg/sec, the magnitude of the drag force (N) on a projectile moving with a speed of 8 m/s is
- A man exerts a northward force of 100 newtons on a 50 kilogram box which sits on a level floor. If the frictional force is 80 newtons, what is the magnitude of the northward acceleration of the box?Same type of track as in the previous problem, this time with d = 2.69 m. The block starts at x = 0, and is given a push to the left with an initial speed of 6.40 m/s, so it starts sliding up the track to the left. At what value of x will the block reverse direction and start sliding back down?The coefficient of friction between a 33kg exercise mat and the gym floor are us = 0.41 and uk = 0.36. Q-Once the mat is moving, what magnitude of horizontal force will keep it moving at a constant velocity?
- The force acting on an object is given by Fx = (5x − 6) N, where x is in meters. (a) Choose the plot that best describes the force versus x from x = 0 to x = 3.00 m. A line is plotted on a coordinate plane that has a horizontal axis labeled x (m) and a vertical axis labeled Fx (N). The line starts at (0,−3) and extends up and to the right at a constant slope to (3,9). A line is plotted on a coordinate plane that has a horizontal axis labeled x (m) and a vertical axis labeled Fx (N). The line starts at (0,−6) and extends up and to the right at a constant slope to (3,9). A line is plotted on a coordinate plane that has a horizontal axis labeled x (m) and a vertical axis labeled Fx (N). The line starts at (0,3) and extends down and to the right at a constant slope to (3,−9). A line is plotted on a coordinate plane that has a horizontal axis labeled x (m) and a vertical axis labeled Fx (N). The line starts at (0,6) and extends down and to the right at a constant slope to…A horse pulls a box of mass M = 55 kg across a rough horizontal surface by applying a horizontal force of 874 N.If the coefficient of kinetic friction between the box and the surface is μk = 0.5, what is the acceleration of thebox?Write S if the given quantity is a SCALAR quantity and V if it is a VECTOR quantity. ____1. 20 km____2. 15 m/s, North____3. 20 degrees Fahrenheit____4. 200 calories____5. 32 gigabytes____6. Force____7. Acceleration____8. Time____9. Momentum____10. Density