A 38 kg crate rests on a floor. A horizontal pulling force of just more than 170 N is nee start thecrate moving. What is the coefficient of static friction between the crate and th.
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- A 247N crate resting on a plane inclined 25-degrees with the horizontal requires a 28N force to bring it down to 7.1m from its initial position. The force is applied 67-degrees with respect to the horizontal. Neglecting friction between the crate and plane, determine the time (in seconds) that the crate had travelled a distance of 7.1m. Answer in two decimal places. Numerical values only. Don't indicate units here, just on the submitted solution. You Answered 2.07 Correct Answer 1.69 margin of error +/- 0.01As shown in the figure, the mass of the block is 214 kg. If Fappi= 59.4 N and Fapp2=38.7 N, find the normal force. Fapp. Fopps FROA balanced net force must be applied. OAn unbalanced net force must be applied. OThe net foroe must be zero. O The net foroe must be greater than the applied force. Question 3Mpie Choice Worth e points 01.03 LC) For an object at rest, the nomal force equals the gravitational force. What is the sum of these forces called? ONet torce OUnbelanced force Onertia OPotential force Question 4 e Choiee Wrth points What kind of metion wil an obect have when forces on it are baianced?
- A runaway train car that has a mass of 12500 kg travels at a speed of 5.7 m/s down a track. Compute the time required, in seconds, for a force of 1300 N to bring the car to rest. DeltaT=Weight is one type of forces, it is a vector ( magnitude and direction, always vertically downward). it is an extrinsic properties, depending on surroundings. While Mass is a scalar, not depending on its surroundings. a. True b. FalseA parachutist has a mass of 70 kg. His parachute has a mass of 10 kg. Watch out: don't think all you have to de ie adk 70 and 10. Wayht you're afler, net maes. a) What is their combined weight? b) At the time this picture was taken, the force upwards due to air resistance was 670 N. What was the resultant force downwards? ) What was the parachutist's acceleration at that point in time?
- can you pls answer a-e. a is not in the pic but reads: if mass is 85kg. and the applied force is 95N at 27degrees above the horizontal. what is the coefficient of kinetic friction? here’s b-e. thank u!!!!Components of a force at different pairs of axes: A force T = 400 N. a. Find the components of Force T with respect to x and y axis. b. Find the components of Force T with respect to x and y axis.M Kg Fa? a wis Calculate the Force required to keep a box of mass 28 from sliding down a ramp at angle 61 degrees. The coefficient of static friction is 0.33. Answer to 3 sig figs.
- 12. In an experiment, a student measured the pulling force (the force required to move each block at a constant speed) and plotted the pulling force, in Newtons (N), versus block mass, i kilograms (kg). The results are shown in Figure 1. Based on Figure 1, the results of the experiment shown are best modeled by which of the following equations? * 25.00- Z 20.00- 15.00 10.00 5.00 0.00 0.00 block mass (kg) Figure 1 a. Block speed (m/sec) = 0.2 x time (sec) b. Pulling force (N) = 0.2 x block mass (kg) C. Block speed (m/sec) = 5.0 x time (sec) hp #3 & 大 7 pulling force (N) 0.50 1.50 000 00 3.50 00 00The coefficient of static friction between A and C and between B and D is g = 0.25, and between A and B is g = 0.46. Neglect the weight of each wedge. (Figure 1) Figure Part A Pmin = 19 Value 15° Units Determine the smallest force P needed to lift the 3000-lb load. Express your answer to three significant figures and include the appropriate units. A ? 3000 lb B D 1 of 11. An orthodonist uses braces to apply forces that reposition and straighten teeth. In the figure below, the teeth on the left side need to be pushed down to line up with the teeth on the right. The braces apply equal tension forces, T1 and T2, of 20.0 N. Calculate the magnitude of the net force. |Fnet Enter to 3 significant figures O UP Down X ナ O Left 15⁰ 2. What is the direction of the net force in the previous problem? Right ✔N y 15° X