x 2.0 = 3000 cos 30˚ x 8.0 F = 24 000 ÷ 2.0 F = 12 000 N b) ∑Fy = 0 (the sum of the forces up must equal the sum of the forces downward) V + 3000 = 12000 V = 9000 N down 2. A crate is 8.0 m tall and 3.0 m wide. Its coefficient of friction to the floor is 0.70. What is the maximum distance from the floor a horizontal force may be used to slide the crate without tipping it? ∑T = 0 ∑Fx = 0 F x d = mg(1.5) F = Ffr F
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Investigation of the factors affecting the period of vibration of a weighted cantilever Introduction The aim of the experiment is to find out how the period T of vibration of a weighted cantilever depends on the vibrating length L. Hypothesis: Assume the relationship between the vibrating period T and vibrating length L is in accord with the equation: T=kLn‚ where k and n are both constant values. According to the hypothesis‚ the vibrating period T and vibrating length L is a linear relationship
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Abstract This purpose of this experiment was to observe the relationship between centripetal acceleration‚ centripetal force‚ and a mass M. In this experiment we used a circular motion apparatus that had a plumb bob attached to a metal shaft (that connected the plumb bob to the vertical shaft) and spring. We found the centripetal force from the spring when it was in circular motion. We hung masses off a pulley system that was attached to the plumb bob until the plumb bob was perpendicular to the
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University of Waterloo Department of Physics & Astronomy Physics 121 – Midterm Fall 2010 Instructors: Dr. Robert Mann (sections 2‚3) Dr. Guenter Scholz (section 1) Date: November 4 ‚ 2009 Time: 19:00-21:00 Duration: 2 hours (120 minutes) rh Instructions Important: Write your name and student ID on each page. If necessary you may use the back of the page to continue your answer but not the back of the previous page. The pages may be separated as part of the marking process. 5 questions
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MCV4U0 Vector Applications Name:__________________ Date:______________ 1. A ship sailing on the open sea leaves Port A for Port B at a bearing of N25oW. A wind of 6 km/h on a bearing of N10oE blows the ship off course. If the ship is capable of 35 km/h in still water‚ find the new speed and direction relative to the shore. 2. A boat is capable of 20 km/h in still water. You wish to cross the river to a point directly across from your present position. At what angle to the bank should
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The trebuchet is made of five basic parts. The base‚ counterweight‚ throwing arm‚ sling‚ and pivot. The base gives the trebuchet a secure base to help with over rotation and other engineering problems that may occur. The counterweight falls and the force of gravity thrusts the projectile forwards. The throwing arm is used to connect the counterweight and sling‚ and is part of the thrust downwards.The sling holds the projectile and the pivot is there to prevent over-rotation. Trebuchets can be made
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orientation of a piezoelectric material during the design and manufacture of a device. There are certain mechanical parameters which plays a great role in piezoelectric effect. 2.2.1 Mechanical Strain The mechanical strain S which results from the application of a stress T is linearly proportional to the compliance S (S-1= Young’s modulus) within the elastic deformation region of the stress-strain curve of the material (below the yield strength )
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Vidyamandir Classes ANSWERS - JEE MAINS Test - 1/IITJEE-2014 CHEMISTRY 1 D 11 D 21 C 2 D 12 C 22 B 3 D 13 B 23 D 4 C 14 C 24 B 5 C 15 B 25 B 6 B 16 C 26 B 7 A 17 C 27 B 8 B 18 D 28 A 9 D 19 D 29 B 10 A 20 C 30 D PHYSICS 31 C 32 C 33 A 34 B 35 CANCEL 36 A 37 C 38 B 39 C 40 C 41 A 42 C 43 D 44 C 45 C 46 C 47 C 48 C 49 C 50 D 51 A 52 D 53 C 54 A 55 C 56 B 57 B 58 D 59 D 60 B
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radiation of heat from the ground into the air B. of low atmospheric pressure C. of the compact density of air D. more dust particles gather in the air A moving body on earth ordinarily comes to rest by itself because of the A. law of inertia B. force of friction C. conservation of momentum D. gravity An isotherm is a line joining places having equal A. Humidity B. Air pressure C. Temperature D. Rainfall Railway tracks are banked on curves so that A. necessary centrifugal force may be obtained from the horizontal
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It is essentially fluid friction and transforms kinetic energy of motion into heat energy‚ just as friction (“the force between surfaces in contact that resists their relative tangential motion”) does between two solid bodies. All fluids express some amount of viscosity. An ideal fluid has no internal friction between the molecules‚ meaning that it is not viscous. The reciprocal of viscosity is fluidity (“the physical property of a substance that enables it to flow.”)2 Thus‚ fluids that are high in
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