Problem 7: The 800-kg car at B is connected to the 350-kg car at A by...
The two boxcars A and B have a weight of 17 000 lb and 38 000 lb
, respectively. They are freely coasting down the incline when the
brakes are applied to all the wheels of car A . The coefficient of
kinetic friction between the wheels of A and the tracks is μ k =
0.6. The wheels of car B are free to roll. Neglect their mass in
the calculation. Suggestion: Solve the problem by representing
single resultant...
Problem 13.2 The two boxcars A and B have a weight of 17 000 lb and 37 000 lb, respectively. They are freely coasting down the incline when the brakes are applied to all the wheels of car A. The coefficient of kinetic friction between the wheels of A and the racks is 0.6. The wheels of car B are free to roll. Neglect Part A Determine the magnitude of the force in the coupling C betwoen the two cars...
An 850 kg car can roll up and down a ramp at an angle of theta = 45.0 degree to the ground. It is connected, by a massless tow rope that runs over a frictionless pulley, to a heavy spring of spring constant k = 35.0 kN/m, as shown in the figure to the right. The car handbrake is released when the car is at rest, with the spring in its unstretched state. Assume the rolling motion of the car...
A car of total mass 1000 kg is moving horizontally, with the engine o , at initial speed 10 m s?1. The brakes are applied, causing the nal speed to be 8 m s?1 and the brakes to increase in temperature by 2 K. If the mass of the brakes is 10 kg, nd the speci c heat capacity of the brakes, assuming no energy transfer to or from the car, and ignoring additional e ects.
A 2.0-Kg mass and a 3.0-Kg mass are on a horizontal friction-less surface, connected by a massless spring with spring constant k = 140N/m. A 15-N force us applied to the larger mass. 1. How much does the spring stretch from its equilibrium length?
Chapter 07, Problem X11 An automobile has a mass of 1760 kg and a velocity of 20.2 m/s. It makes a rear-end collision with a stationary car whose mass is 2100 kg. The cars lock bumpers and skid off together with the wheels locked. (a) What is the velocity of the two cars just after the collision? (b) Find the impulse that acts on the skidding cars from just after the collision until they come to a halt. (c) If...
Learning Goal Part A-Time for the Car to Reach 100 km/h ? To apply the concepts of impulse and momentum to problems involving unknown forces, velocities, and times. Find the time it will take for the car to reach u 100 km/h from rest. A new rear-wheel drive automobile design is being tested and you have been asked to estimate its performance. The car without wheels (i.e., the body) has a mass of mc 1450 kg. The wheels (including tires)...
te Tear Wheel l TPont wheel, B to leave the road. Assume thone front wheel does not slip. Neglect the mass f all the The wheels mountain bike has a mass of 40 kg with center oint G1, while the rider has a mass of 60 kg with nter of mass at point G2. When the brake is applied to the nt wheel, it causes the bike to decelerate at a constant of 3 m/s. Determine the normal reaction the...
A .1 kg toy car with 0.01 kg, 0.01 m radius solid wheels is pushed into a spring with a 1 N/m spring constant until it has compressed by 0.02 m. The toy car is then released, after which it rolls without slipping on level ground. It is still attached to the spring, so its motion is harmonic (back and forth) motion. a. For this part assume that the mass of the wheels is zero: what is the frequency of...
4. The car has mass of 2600 kg and center of mass at G. It has front wheel drive and the front wheels at A are slipping. The back wheels at B are free to rotate. Neglect the mass of the wheels. The coefficient of kinetic friction between the wheels and the road is plk = 0.85 Find: a. a, the acceleration of the car b. na, the total normal force on the front wheels C. No, the total normal...