Knowing that the coefficient of static friction between the tires and the road is 0.80 for the car as shown in figure 2. At this car, suddenly brakes are applied when it was moving with velocity of 360 inch/sec and it skidded to rest in 240 inch. Determine the magnitude of the normal reaction and of the friction force at each wheel as the car skidded to rest. Give the answer in terms of weight(w). Use weight for mass of car( i.e; m=w/g) if required.

In the figure below, a block of mass M hangs at rest. The rope that is fastened to the wall is horizontal and has a tension off 52 N. The rope that is fastened to the ceiling has a tension of 91N and makes an angle theta with the ceiling. What is the angle theta? What is the mass M? You MUST draw all the force vectors on the figure with their corresponding unit vectors( i , j ,k )   and then write the relation between forces based your sketches. Show your complete solution

A box of mass 12 kg is pulled at a constant velocity with a cord that makes the angle 32 degrees as shown in the sketch. If the coefficient of kinetic friction between box and the surface at which it is sliding on is 0.21, and tension in the string is 13 N, what is the value of kinetic friction force? (Note: Use g = 10 m/s^2 and round answer to two significant figures. Learn about sig. fig. in Section 1.3 of book or from provided handout ) velocity = constant T 11

A 90-kg man walks on a sawhorse, as shown below. The sawhorse is 2.0 m long and 1.0 m high, and its mass is 25.0 kg. Calculate the normal reaction force on each leg at the contact point with the floor when the man is 0.5 m from the far end of the sawhorse. (Hint: At each end, find the total reaction force first. This reaction force is the vector sum of two reaction forces, each acting along one leg. The normal reaction force at the contact point with the floor is the normal (with respect to the floor) component of this force.)

The figure(Figure 1) shows a block (mass mA ) on a rough horizontal surface, connected by a thin cord that passes over a pulley to a second block (mB), which hangs vertically. If mA is 50Kg and mB is 30kg , in case the kinetic friction Coefficient is 0.25 what is the acceleration. Use Newton’s 2nd Law to find the formula for acceleration first. thanks Write the appropriate Formulas____________________   Plug in the given data with their units _______________   Solve for the unknown __________________________   Box the Final Answer with it’s unit __________________ E) Show all forces applied to mA & mB with directions and point at which it was applied to

#1) Use Newton's Second Law Analysis to solve the following problem. , 1 - sketch and FBDs, 2 - write 0 down force equations in all dimensions, and 3 solve for requested variable. Two boxes, connected by a rope, are at equilibrium (need to consider friction on the incline). Box B is not touching the incline, it is just hanging from the outer rim of the pulley. Assume the magnitude of the tension force is greater than the magnitude of the wx component of mass A for part A (this should help you determine the direction of the static friction force). Draw the FBD for both box A and box B separately. Use N, for Normal Force, use fs for the static friction force, use proper variations of wx and wy for the weight components (two masses here, so they should have different labels not just wx and wy for both, you need to be able to tell them apart), and use T for the Tension Force. Somewhere in your work show what your variations of the magnitudes of wx and wy are in terms of the masses and g…

Develop approximate state space model of a rocket vehicle (Space Shuttle at launching) moving vertically above the earth The vehicle thrust is where in is the rate of mass expulsion and can be controlled. Assume a.. drag face is give; J = K m a nonlinear function of velocity. + -h(t). 1 Weight Thrust ↑ Drag. let the instantaneous mass of the vehicle be m(t) and the drag D = f(W) the Assuming an inverse. square gravity law and Newton's. second law, first write..... differential equation that describe the system (ise, the dynamic force balance equation) (Note that this is a nonlinear, time-variable system)

Figure shows the velocity graph of a 65 kg student in an elevator. What is the student's apparent weight (magnitude only) at t = 7.0 s, in Newtons? Use g = 10.0 m/s². (Hint: What is the net force?) Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. Vy (m/s) 8- 4- (s) 10 4. 6. 8.

I created a free body diagram but need help explaining how the slope of the ramp can be used to determine the coefficient of friction. Im trying to use math to exaplain using  μ = tan(θ) and my rise is 15cm and my run is 55cm. My teacher taught us SOH CAH TOA but im not sure how I would expalin using math. Please help me out!

If the coefficient of kinetic friction is 0.03 between a 1.73 block and an icy surface, find the distance (in meters) the block travels on the ice if given an initial velocity of 8.2 m/s. Assume the surface is level. Round your answer to 1 decimal place.