1) The 20 lb block is moving to the right with a speed of 2 ft/sec on a flat surface, when force P is applied 16 at 1 = 0. The kinetic coefficient of friction is 0.5. P, Ib Vo - 2 ft/sec a. What is the velocity of the block when 1 = 20 lb 0.2 sec. b. If P continues to be 8 lb for 1> 0.4 s, when 0.5 will the block come to a stop? 0.2 0.4 sec
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- Mez0,3 30° The loaded cradle has a weight of 600 N. A force of P 250 t acts on it. The slide stands still before the load P is applied. The kinetic coefficient of friction between the slide and the plane is the initial z 0.3. Calculate the speed of the slide 3 s after P is applied.A 100-N block on a rough 30°-incline is acted upon by a force P as shovm causing it to accelernte at Kinetic friction is 0.30. (a) Draw the FBD of the block (b) Find the magnitude of P. Please explain in full detailYour car (1153 kg) dies & you need to get it out of a parking spot. You & your friends apply 6959 N [R 16O D] for 10 seconds. It then starts to move on its own. If the coefficient of friction is 0.31, how far will it travel in total?
- 4. You and your fellow astronaut are playing pig toss. You throw the 125kg pig by applying a force over 42cm and the pig acquires a velocity of 7.5m/s. Your fellow harnessed astronaut takes .75s to catch the pig. If you have a mass of 62Kg, what is your velocity? What force is required to catch the pig? M-Vi + Mve = V- -I5m/s 125xg(1.5m/s) + 2kgc)=0 F = 470 N N= -15.12mls = 15 4. ms 0.355 m-Vi= (m, +m)v 125tg( Smis)= (125kg+02kg)v Ve4. lo87 m/s f= = 468.AN 5. If the fellow astronaut forgot to harness and has a mass of 75kg, what is the astronaut's velocity after catching the pig? same veiocity as found Va= 43m/s above 6. If the astronaut is 8.2 m from the back of the space shuttle, how long will it take for the astronaut and pig to hit the shuttle? If the shuttle's back door is open (Ok, who left the door open - were you bom in a ban?), how far away from the shuttle will the two be after one minute? T= 7. You are on the Olympic Bob Sledding team. You and your team push the sled which…As shown in figure, find that at what distance body A will attain a velocity of 3 m/s when starts from rest.Assume the coefficient of Friction as 0.2 and pulleys are frictionless and weightless.View Policies Current Attempt in Progress The initially stationary 14-kg block is subjected to the time-varying force whose magnitude Pis shown in the plot. The 30° angle remains constant. Determine the block speed at (a) t - 1.8 s and (b) t- 6.4 s. 121 14 kg 30 SM0.52 H0.40 7.8 Answers: (a) Att- 1.8 s, v- m/s i (b) At t- 6.4 s, v- m/s
- A force of 36.0N acclerates a 6.0kg block at 7.0m/s2 along a horiztonal surface. How large is the friction force? What is the coefficient of kinetic friction?A force acts on an object of mass 0.5 kg and accelerates it from rest to 0.2 m/s in 0.2 s. The average force applied is... Select one: а. О.5 N b. 0.2 N с. 1.0 N prmula Sheet, CA-2, T-3, AY Jump to... 20-21 Activa Go to SeL. Fo A block of mass 3.00 kg is moving in the positive x direction, across a rough surface (UK=0.11) with an initial velocity of 6.00 m/s and is acted upon by a force Fo=4.00 N, applied in the negative x direction. Select the correct FBD for the mass.
- 2- Bolum-5+A2B1C3uUxiD5ViBM5s1Vi20FXF231G A034 kg particle moves in the xy plane with coordinates of x(t) --15.0 + 2.0t -4.0t (m) and y(t) 25.0 + 7.0t -9.0t (m), where t is in second. Find the net force acting on the particle att-0.7s. Option 1 Option 2 Option 3 5.71+ 61) 571-61/-5.71-6.1/-5.71+6.1)|531+3.1 Option 4 Option Srough surfice Smath swace leeeeed 2.50m he 3.00m E; Ei + WNc A 34.2 kg block slides with a velocity of 10.22 m/s to the right on a frictionless surface (as shown in the figure above). The block slides up a slope to a height of 3.00 m and then slides across a 2.50 m long rough surface with a coefficient of kinetic friction equal to 0.325. The block continues to travel to the right and bumps into a massless spring with a spring constant (k) equal to 2320 N/m. a) How much does the spring get compressed by the block with respect to its equilibrium length? Please answer with a positive number in units of metres, with 3 sig figs. Start with conservation of energy: E, = E; + WNC , and show all steps. b) What is the potential energy stored by the spring when the mass comes to a stop? Please show the symbolic equation and then "plug in the numbers" to give a numerical answer in units of joules with 3 sig figs. c) What happens to the potential energy stored in the spring after the block stops…I am driving my 10000.kg car @ 25m/s andapply a force of 3000.N with my brakes for 30. seconds. What is the speed afterI hit the brakes.